RT Journal Article SR Electronic T1 On the commercial exploitation of participants of research. JF Journal of Medical Ethics JO J Med Ethics FD BMJ Publishing Group Ltd and Institute of Medical Ethics SP 392 OP 392 DO 10.1136/jme.23.6.392 VO 23 IS 6 A1 J Savulescu YR 1997 UL http://jme.bmj.com/content/23/6/392.abstract AB